Script to show SSD lifespan information on a UniFi Cloud Key Gen2 Plus (over SSH)

uckg2p_ssdlife.sh

#!/bin/bash

# Set up the target drive path and the number of LBA (I know this can be read from SMART...)
TARGETDRIVE="/dev/sda"
LBAS="7814037168"

# In case a different drive shall be selected
#read -rep $'Which drive to check? [/dev/sda]\n' USERTARGETDRIVE
#if [[ $USERTARGETDRIVE ]]; then
#    TARGETDRIVE=$USERTARGETDRIVE
#fi

echo ""
echo "===== For $TARGETDRIVE:"

echo -n "Power-on hours: "
smartctl -A /dev/sda | awk '/^  9/{printf $10}'
echo " ("$(smartctl -A /dev/sda | awk '/^ 12/{printf $10}')" power cycles)"

echo -n "    Wear level: "
smartctl -A /dev/sda | awk '/^177/{perc=$4+0;printf perc}'
echo "% (average "$(smartctl -A /dev/sda | awk '/^177/{printf $10}')" cycles per block)"

echo -n "   Total write: "
smartctl -A /dev/sda | awk '/^241/{printf $10*512/(1024*1024*1024*1024)}'
echo "TBW ($(smartctl -A /dev/sda | awk -vlbas=${LBAS} '/^241/{printf $10/lbas}') FDWs)"

echo ""